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USER MENU OPERATION
SHOW A CALIBRATION LOG
From the working display access the user menu by pressing and holding
the MENU button (B) until the top line of the display reads USER MENU.
Press and release the SAVE/ZERO button (C) until the bottom line
displays SHOW CAL LOG.
Press the MENU button (B) and the display will show the last gas
calibrated and calibration date.
Pressing any button will return the display to the user menu.
Pressing the POWER/MUTE button (A) will return the instrument to the
working display.
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